If you're seeing this message, it means we're having trouble loading external resources on our website.

Хэрэв та вэб шүүлтүүртэй газар байгаа бол домэйн нэрийг *.kastatic.org and *.kasandbox.org блоклосон эсэхийг нягтална уу.

Үндсэн товъёог
Polk presided over the era of Manifest Destiny, adding the territories of Texas and Oregon to the United States during his presidency. Little did he know that this vast expansion would force the country ever closer to civil war. 
Sort by: